The study, planning, calculation, execution, maintenance, purchase and sale, import and export of sanitary installations, central heating systems, gas and alternative energy systems, heat pump systems, ventilation systems, water supply systems, garden irrigation systems, swimming pools and water treatment systems. The company may establish branches and subsidiaries in Switzerland and abroad, participate in other Swiss or foreign companies, acquire or establish other companies of the same kind, as well as conclude all transactions and contracts that are suitable to promote the company's purpose.